what is the mass of a 1.70- l l sample of a liquid that has a density of 0.921g/ml 0.921 g / m l

Answer:

jump higher

Explanation:

this is due to the Moon's surface gravity being weaker because it is far less massive than Earth. A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.

The acceleration of the speaker cone is 133.33 m/s^2.

To calculate the acceleration of the speaker cone, we need to use Newton's second law which states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. Mathematically, this can be expressed as:

a = F/m

where a is the acceleration, F is the force, and m is the mass.

In this case, we know that the force exerted by the speaker cone is 20N and the mass of the cone is 150 grams. However, we need to convert the mass to kilograms as the SI unit for mass is kilogram. Therefore, the mass of the cone is 0.15 kg.

Now, we can substitute these values into the formula to get:

a = 20N/0.15kg
a = 133.33 m/s^2

Therefore, the acceleration of the speaker cone is 133.33 m/s^2.

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Answer:

40° 70° 8

Explanation:

Hello!

For an object sliding down an inclined plane, there are two forces working on the object: The normal force and the force due to gravity.

Breaking the force due to gravity into its components, we get a force of:

Mgsinθ, parallel to the incline's slope. This is the NET force acting on the object, causing it to accelerate.

Since ∑F = m · a:

Mgsinθ = m · a

Divide by the mass:

a = gsinθ

Infrared wave basically have shorter wavelengths than X-rays. The correct option is A.

A section of the electromagnetic radiation spectrum with wavelengths ranging from roughly 700 nanometers (nm) to one millimetre is known as infrared radiation (IR), or simply infrared (mm).

While shorter than radio waves, infrared waves are longer than visible light waves.

Infrared radiation has the ability to ease muscle tension and encourage local blood circulation.

Infrared radiation has been used in conventional medicine to treat conditions including autoimmune diseases and issues with wound healing in addition to relieving muscle pain and tension.

Infrared waves are shorter than radio waves but longer than visible light waves.

Thus, the correct option is A.

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Answer:

Angular acceleration, \(\alpha =0.64\ rad/s^2\)

Explanation:

Given that,

Initial angular velocity, \(\omega_i=4.67\ rad/s\)

The final angular velocity, \(\omega_f=7.37\ rad/s\)

Time, t = 4.2 s

We need to find her average angular acceleration  during this time interval. Acceleration is the rate of change of velocity. So,

\(\alpha =\dfrac{\omega_f-\omega_i}{t}\\\\\alpha =\dfrac{7.37-4.67}{4.2}\\\\\alpha =0.64\ rad/s^2\)

So, her average angular acceleration is \(0.64\ rad/s^2\).

weather is everyday things

weather could be a hurricane

weather could be a tornado

climate is more long term over time

example the climate in Antarctica is cold because it happens over long periods overtime

\(\\ \rm\hookrightarrow Acceleration=\dfrac{v-u}{t}\)

\(\\ \rm\hookrightarrow Acceleration=\dfrac{20-12}{45}\)

\(\\ \rm\hookrightarrow Acceleration=\dfrac{8}{45}\)

\(\\ \rm\hookrightarrow Acceleration=0.1m/s^2\)

Now

\(\\ \rm\hookrightarrow v^2-u^2=2as\)

\(\\ \rm\hookrightarrow (20)^2-12^2=2(0.1)s\)

\(\\ \rm\hookrightarrow 400-144=0.2s\)

\(\\ \rm\hookrightarrow 256=0.2s\)

\(\\ \rm\hookrightarrow s=\dfrac{256}{0.2}\)

\(\\ \rm\hookrightarrow s=1280m\)

The fewer the number of substitutes for a good, the less elastic the demand.

The concept of elasticity measures the responsiveness of demand or supply to changes in price. When there are fewer substitutes available for a particular good, consumers have limited alternatives to switch to if the price of that good increases. As a result, the demand for the good becomes less elastic, meaning that the quantity demanded is less responsive to changes in price.

In this scenario, option (a.) is correct. When there are fewer substitutes for a good, consumers have a more limited range of choices, making them less likely to respond strongly to changes in price. On the other hand, if there are many substitutes available, consumers have more flexibility to switch to alternative goods if the price of one particular good increases, resulting in a more elastic demand.

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the complete question is

The fewer the number of substitutes for a good: (a.) the less elastic the demand. b. the more elastic the demand.easenoni vtitnsu c. the more elastic the supply. sesetoeb yliinau d. the less elastic the supply

Answer:

Pneumatics use easily compressible gas like air or pure gas. Meanwhile, hydraulics utilize relatively-incompressible liquid media like mineral oil, ethylene glycol, water, synthetic types, or high-temperature fire-resistant fluids to make power transmission possible.

Explanation:

hope this helps

Answer:

B. Chlorine (CI)

Explanation:

I GUESS I DON'T NEED TO GIVE THE EXPLANATION. CAN I GET SOME REWARDS PLEASE....

THE ANSWER IS: B. Chlorine (CI)

\([Cr(H_{2}O)_{6}]_{3+}\) is paramagnetic due to the presence of unpaired electrons. Paramagnetic materials are attracted to an external magnetic field.

To determine the number of unpaired electrons in the \([Cr(H_{2}O)_{6}]_{3+}\) complex, we need to consider the electron configuration of chromium.

Chromium (Cr) has an atomic number of 24. Its ground-state electron configuration is [Ar] 3d5 4s1. In the \([Cr(H_{2}O)_{6}]_{3+}\) complex, Cr loses three electrons to form a +3 charge.

To distribute the remaining electrons, we start by filling the orbitals in the order of increasing energy. The d-orbitals can hold a maximum of 10 electrons.

In this case, since Cr has three fewer electrons, it leaves us with three unpaired electrons in the d-orbitals.

Therefore, \([Cr(H_{2}O)_{6}]_{3+}\) is paramagnetic due to the presence of unpaired electrons. Paramagnetic materials are attracted to an external magnetic field.

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If the primary coil of a transformer contains 100 turns, the secondary has 200 turns and the primary coil is connected to a size-AA battery that supplies a constant voltage of 1.5 volts then The voltage measured across the secondary coil would be 3.0 V.

According to the transformer equation, the ratio of the number of turns in the primary coil to the number of turns in the secondary coil is equal to the ratio of the output voltage to the input voltage. Therefore, in this case, the voltage across the secondary coil can be calculated as:

The voltage across the secondary coil = (Number of turns in the secondary coil / Number of turns in the primary coil) * Voltage across the primary coil

\(= (200/100) \times 1.5 \ V\)

= 3.0 V

Therefore, the voltage measured across the secondary coil would be 3.0 volts.

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Most crashes occur at intersections because Drivers fail to search and identify a safe path of the travel when approaching an intersection. Drivers don't identify or understand the risks. Drivers fail tp develop good driving habits to effectively manage the risks.

Most crashes occur at intersections because of the following reason:

1) Drivers fail to search and identify a safe path of the travel when approaching an intersection.

2) Drivers don't identify or understand the risks.

3) Drivers fail tp develop good driving habits to effectively manage the risks.

Thus, Most crashes occur at intersections because all of the above reason. Most crashes occur at intersections because Drivers fail to search and identify a safe path of the travel when approaching an intersection. Drivers don't identify or understand the risks. Drivers fail tp develop good driving habits to effectively manage the risks.

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The mass of an atom is less than the sum of the masses of its component protons, neutrons and electrons. The mass defect is 0.0423 amu. The correct option is B.

The mass defect is equal to the mass lost as an equivalent amount of energy during the formation of a given nucleus from the component nucleons.

Δm = M°- M

Δm = Mass defect

M° = Expected total mass

M = Experimentally determined mass

Here 'Li' has 3 protons and 4 neutrons.

The mass of proton = 3 × 1.0073 = 3.0219 amu

The mass of neutron = 4 × 1.0087 = 4.0348 amu

The sum of masses of protons and neutrons = 7.0567

Mass defect = 7.0567 - 7.0144 = 0.0423 amu

Thus the correct option is B.

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Answer:

beam balance

Explanation:

its the most optimal

Answer: A) and D)

Explanation:

Answer:

professional communication style is expected to be formal while the casual is informal.

Explanation:

A. Controlled Variable.

I hope this helps!

Answer:

78m

Explanation:

Answer:

27.82m

Explanation:

The distance of the cyclist can be calculated using the formula:

S = ut + 1/2 (at^2)

Where; S = distance

u = initial velocity

a = acceleration

t = time

However, to find acceleration, we use:

a = v - u/t, where v is the final velocity

According to this question, u = 4.2m/s, v = 6.3m/s, t = 5.3s

a = 6.3 - 4.2 / 5.3

a = 2.1/5.3

a = 0.396m/s^2

Hence, using S = ut + 1/2 (at^2)

S = (4.2 × 5.3) + 1/2 (0.396 × 5.3 × 5.3)

S = 22.26 + 5.56

S = 27.82

Therefore, the cyclist travel in 27.82m

According to Kepler’s law of motion, it is stated that the time period of a planet revolving around the sun, as well as the speed of the planet, are proportional to the radius of the orbit raised to the 3/2 power.

Thus, if the radius of an orbit remains constant, the speed of the satellite will remain constant regardless of any change in mass.

But, according to the law of conservation of momentum, the product of the mass and velocity of a body is constant unless an external force acts on it.

Therefore, if the mass of a satellite is doubled while the radius of its orbit remains constant, then its speed will be halved.

Given: The mass of the satellite is doubled.

The orbit radius remains constant Find:

The speed of the satellite

Solution:

By the law of conservation of momentum

Mass × Velocity = constant Or Mass × Velocity₁

= Mass × Velocity₂

Where Velocity₁ is the initial speed, Velocity₂ is the final speed.

Now, the mass of the satellite is doubled.

Then,

2M × Velocity₁ = M × Velocity₂

Velocity₂ = 2 × Velocity₁

So, the speed of the satellite is doubled.

Answer: The speed of the satellite will be doubled if the mass of a satellite is doubled while the radius of its orbit remains constant.

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Answer: absorb

Explanation: ligh goes in ur eyes

In order to determine the number of particles of methane, use the following expression:

number of particles = (mass /molar mass ) x Avogadro's number

in this case, you have:

molar mass = 16.03 grams/mole

mass = 120 grams

Avogadro's number = 6.02*10²³ particles/mol

replace the previos values of the parameters into the formula for the number of particles:

number of particles=(120 grams/ 16.03 grams/ mol)x(6.02*10²³particles/mol)

= (7.46 mol) x (6.02*10²³ particles/mol)

= 4.50*10²⁴ particles

Hence, the number of particles of methane, in 120 grams, is 4.50*10²⁴

The winds aloft chart for the Great Lakes (Michigan is fine) region displays the wind direction and speed at several altitudes. At 3000 feet, the wind speed is approximately 17 knots.

At 12,000 feet, the wind speed is about 44 knots. The wind speed at FL350 is approximately 67 knots.Surface friction has an effect on the winds close to the ground, slowing them down due to the frictional force exerted on the ground by air molecules. The winds shift direction with altitude, veering to the right of the direction of travel in the northern hemisphere. The approximate location of the Jetstream can be obtained by examining the wind/temperature plot chart. The fastest wind speed at FL360 appears to be approximately 145 knots, traveling towards the northeast. Flight to the east or southeast would benefit from this wind speed.Seasonally, winds aloft change depending on the position of the jet stream, which moves towards the poles during the summer months and towards the equator during the winter months.

The current surface analysis chart (Prog chart) shows the major frontal activity passing through the Midwest states. Precipitation is what leads the frontal passage in general, with both temperature and wind speed/direction changing from behind to ahead of the front.

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Answer:

Buoyant Force

Explanation:

That's literally the definition of the buoyant force

Conversion of electromagnetic (EM) energy from the sun into other forms of energy occurs for the following options:

a. Biofuels

c. Solar thermal power

e. Wind power (EM to air movements)

A- Biofuels: During photosynthesis, plants capture electromagnetic energy from the sun and convert it into chemical energy, stored in the bonds of organic molecules, such as glucose. This process allows for the conversion of EM energy to chemical energy in the form of biofuels.

c. Solar thermal power: Solar thermal power plants use mirrors or lenses to concentrate sunlight, which is then converted into heat energy. This thermal energy can be used to generate steam, which drives a turbine and produces mechanical energy.

e. Wind power: Wind turbines harness the kinetic energy of moving air, which is ultimately driven by the sun's uneven heating of the Earth's surface. The sun's energy heats the atmosphere, creating temperature and pressure gradients that result in wind currents.

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